Type-writing machine.



O WOODWARD. TYPE WRITING MACHINE.

APPLICATION rum) JAN. a1, 1906.

INVENTEIR:

Patented Dec. 13, .1910.

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OSCAR WOODWARD, OF NEW YORK, N. Y., ASSIGNOR TO DENSMORE TYPEWRITER COM-PANY, 0F SYRACUSE, NEVT YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

To all whom it may concern:

Be it known that I, OSCAR Woonwnnn, a citizen of the United States, andresident of the borough of Manhattan, city of New York, in the county ofNew York and State of New York, have invented certain new and usefulImprovements in Type-Writing Machines, of which the following is aspeclfication.

My invention relates to the paper feeding mechanism of typewritingmachines and has for its main object to provide improved devices of theclass specified.

To the above and other ends, the invention resides in the features ofconstruction, combinations of devices and arrangements of partshereinafter fully described and partic ularly pointed out in the claims.

I have shown my invention applied to a machine resembling generally onestyle of the Densmore typewriter and have not, therefore, deemed itnecessary to show and W-- ....-adescribe parts of said machine otherthan those requisite to a complete understanding of my invention. It isto be understood, however, that said invention may be adapted to otherconstruct-ions of writing machines.

In the accompanying drawings, Figure 1 is a fragmentary rear elevationof the platen and platen frame of a typewriting machine shmving myinvention applied thereto, parts being omitted and a part being brokenaway for the sake of clearness. Fig. 2 is a transverse sectional viewtaken on the line 'w10 in Fig. 1 and looking in the direction of thearrow at said line, a section of the carriage truck and its bearingbeing also shown in said Fig. 2. Fig. 3 is a detail transverse sectionalview taken on the line wm of Fig. 1 and looking in the direction of thearrow at said line. Fig. 4- is an enlarged detail transverse sectionalview showing one of the hanger arms of the paper feed roller and showingthe support for the hanger arms, the view being taken on a planerepresented by the line g in Fig. l and looking in the direction of thearrow at said line. Fig. 5 is an enlarged detail transverse sectionalview taken on a plane represented by the line 22 in Fig. 1, and showingthe platen scale and its mounting. Fig. 6 is an enlarged fragmentaryvertical longitudinal sectional view taken through the rear bar of theplaten Specification of Letters Patent.

Application filed January 31, 1906.

Serial No. 298,796.

frame and looking from the rear of the machine. Fig. 7 is an enlargedperspective v1ew of one of the parts hereinafter called a hanger arm.

Referring to the drawings, a trough-like track-way 1 is supported onbrackets 2 se cured on the top plate of the machine, the inner walls ofsaid track-way being pro vided with oppositely disposed grooves 3 whichcooperate with rollers 4 carried by a carriage truck 5. Pivoted at 6 insaid carriage truck are links 7 the upper ends whereof are perforated topermit of the passage of a shaft 8 to which, near its ends, said links 7are secured. As best seen in Fig. 6, the shaft 8 is provided with bushlngs 9 abutting the links 7, said bushings being provided at their outerends with hexagonal heads 10 and having their inner portions formedexternally with threads which cooperate with the internally threadedends of a hollow bar or rod 11. Each bushing 9 passes through and isseated in an opening in a side bar or plate 12 of the platen frame, saidside bar 12 being received between the head 10 of the bushing and theend of the hollow bar 11, said bar 11 and side plates 12 being thusclamped together. The side plates 12 extend forwardly from the bushingand are connected at their front ends by a bar 13 (Fig. 2) arrangedparallel with the'hollow rod 11. The front bar 13, the side bars orplates 12, the bushings 9 and the hollow bar or rod 11 con stitute aplaten carrier or frame. The shaft 8 extends through the bore of thehollow rod 11 and by means of the links 7 pivotally connects the platencarrier or frame with the carriage truck 5, said truck and said platencarrier or frame together constituting a platen carriage. A hearingblock 1% is secured by screws 15 to the front of the bar 13, said blockproviding a bearing for a roller 16 which cooperates with a shiftableguide rail 17 (Fig. 2). A cylindrical platen 18 is mounted on an axle 19which has hearings in the side bars 12 of the platen frame. A fingerpiece 20 extends upwardly and forwardly from the lefthand side bar 12,said finger piece being convenient for moving the platen endwise and forraising it to expose the. line of writing.

Patented Dec. 13, 1910.

The platen carriage, as above briefly described, is not claimed hereinas it comprises the subject-matter of a companion application. It is tobe understood that for the purposes of my present invention it isimmaterial whether or not the platen carrier be associated with acarriage truck as described.

Referring to my novel paper feeding devices, a sleeve 21 surrounds andis adapted to turn on the hollow bar or rod 11 which extendslongitudinally of the platen at its rear, said sleeve extendingthroughout or substantially throughout the length of the rod 11 andhaving its ends housed within the side bars 12 of the platen frame asindicated in Fig. (3. It is to be understood that any bar extendinglongitudinally of the platen and secured to the frame thereof, otherthan the bar 11, may serve as a bearing for the sleeve 21, and that anyother such bar is comprehended within the scope of those of thesubjoined claims which recite a platen carrier comprising a barextending longitudinally of the platen. Secured on the sleeve 21 arehanger arms 22, said hanger arms being most clearly disclosed in Figs.1, 4 and 7. Each hanger arm is split as indicated at 23 and is bored outto admit the passage of the sleeve 21 along and around which said hangerarms are adjustable and to which they are secured by screws 2lconnecting the split portions. The detachable hanger arms 22 dependfrom the sleeve and at their lower ends are pro vided with slots 25opening rearwardly. As indicated in the rear view (Fig. 1), the hangerarms 22 are arranged in pairs on the sleeve, the left-hand pair beingshown in said Fig. 1 with the left-hand one of the right hand pair. Eachhanger arm is provided with an off-set portion 26, the off-set portionsof each pair of hanger arms being oppositely disposed. Secured to theoff-set portion 26 of each hanger by a screw 27, is a flat spring 28,said flat spring extending upwardly from its securing screw, curvingover and in front of the sleeve 21 and thence downwardly as indicated inFigs. 1 and a, the free end of said spring extending downward past themouth of the slot in the associate hanger arm 22.

Each pair of hanger arms serves to support a paper feed roller shaft 29,said shaft extending longitudinally of the platen and its end portionsbeing received in the slots 25 in the hanger arms. The ends of eachshaft are headed, as indicated at 30 (Fig. 1), in order to preventlongitudinal displacement of said shaft, and the free ends of thesprings 28 cooperate with said shaft to retain it in position in thebearing slots 25, one side edge of each spring cooperating with anadjacent head 30 on the shaft 29 to prevent longitudinal displacementthereof.

Mounted upon each shaft 29 so as to turn freely thereon, are feedrollers 31 provided with sheaths 32 of rubber or other suitablematerial, said feed rollers being adapted to cooperate with the platen18. Two of such feed rollers are preferably arranged on each feed rollershaft- 29 and are maintained spaced apart by a sleeve 33 which surroundsthe shaft 29 between the feed rollers and abuts against their opposingends, the length of said sleeve 33 being such that the other ends ofsaid feed rollers are close to the neighboring hanger arms 22.

Secured on the front face of the hanger arms 22 by screws 34 is a paperapron 35, said paper apron curving over the tops of the hanger arms andover the sleeve 21, as bestshown in Figs. 1, 2 and 1, and extendingdownwardly and forwardly between the feed rollers 31 and the platen 18.The paper apron is cut away as indicated at 36 to pro vide openingsthrough which the feed rollers 31 protrude to cooperate with the platen.A platen scale plate 37 provided with the usual scale, is arrz ngedlongitudinally of the platen below the lower edge of the paper apron Thescale plate is suitably secured as by rivets 38, (Fig. to the lower endsof arms 39, said arms i-extending downwardly and forwardly from the backrod 11. Preferably there are three of these arms 39, one at or near eachend of the scale plate 37 and one near the middle thereof and betweenthe two sets of hanger arms 22. The upper end of each arm 39 is slottedas indicated at 10 and opposite the upper end of each arm the sleeve 21is cut away as indicated atll so as to permit of a contacting engagementbetween the arm and the back rod 11, to which said arm is secured by aheaded screw 42 which passes through the slot 410 and is received in athreaded opening in the rod 11. Between the head of each screw 42 andits associate arm 39 I preferably interpose a spring washer 4-3 which isadapted to cooperate with said arm 39 to maintain the scale plate 37 inengagement with the platen or the paper thereon. By loosening the screws42 the arms 39 may be adjusted longitudinally to position properly thescale plate 31'. A. paper table 4% is provided at its ends with springclips 4-5 which are suitably secured to said paper table as by rivets4:6. The spring clips embrace the sleeve 21 on opposite sides thereofand outside the hanger arms 22 and the paper table is thereby pivotallyconnected with said sleeve 21 and may be. readily detached therefromwhen desired. The paper table is adapted normally to extend upwardly andrearwardly from said sleeve. The rear face of the paper table hassecured to it a bearing bracket 4:7 in which is pivoted a bearing roller48, said bearing roller normally contacting with the top of the carriagetruck 5 to maintain the paper table in normal position irrespective ofthe case position of the platen frame or whether it is swung back toinspect the writing.

In order to throw the feed rollers out of cooperation with the platenand to apply pressure to the feed rollers, I provide means which willnow be described.

Secured on the rotary sleeve 21 near the left-hand end of the latter isan angled lever 49, said lever being provided with a collar portion 50,split as indicated at 51 (Fig. 3), and bored out to surround the sleeve21. The two portions of the split portion are connected by a headedscrew 52 which, when tightened, causes the collar to grip the sleeve 21so that when the lever 49 is operated itwill rotate said sleeve. One arm53 of the angled lever extends forwardly and downwardly from the collarport-ion 50, passing under the platen axle 19 and having a verticallydisposed portion which is capped or topped by a finger piece 54, thelatter serving as a release key for the paper feed rollers. A limitingpin 55 projects laterally from the arm 53 above the left-hand side bar12 of the platen frame in position to cooperate with the latter when thefinger piece or key 54 is depressed. The other arm 56 of the angledlever 49 extends downwardly from the collar portion 50 and is offsetlaterally outward, as best shown in Fig. 1. The arm 56 is perforated toreceive a headed screw 57, which screw is entered from the rear. Thethreaded shank of the screw 57 screws into the rear end of a helicaldraw spring 58 which is horizontally disposed transversely of theplaten. The rearmost coils 59 of the spring are preferably solderedtogether and cotiperate with the screw 57 which screws into the coils 59as into a nut. A light tubular housing 60 surrounds the helical spring58 throughout its length, said housing being secured to the under sideof the left-hand bar 12 of the platen frame by a headed screw 61. Thisscrew, as appears in Fig. 3, is seatedin position through an opening 62in the bottom of the forward end of the tube 60 and screws upward intothe side bar 12, passing through an opening in the top of the tube 60.The forward end of the spring 58 is hooked around the shank of the screw61 and is confined between the head of said screw and the inner face ofthe tube 60. The tension of the spring 58 is transferred through thelever 49, sleeve 21 and hanger arms 22 to the 'feed rollers 31 and tendsconstantly to pull or draw said feed rollers forwardly into contact withthe platen. The tension of the spring 58 may be regulated by means ofthe screw 57. The construction is such, however, that the pressure ofthe feed rollers against the platen can never become too strong, becausethe pressure of the spring 58 is transmitted to the feed rollers throughthe springs 28. Thus, the free ends of the springs 28 which. cotiperatewith the feed roll shafts 29 will yield after the feed rollers contactwith the platen, permitting additional movement forward of the hangerarms 22 while at the same time the feed rollers 31 and their shafts 29remain stationary.

The paper, which is represented by the dotted line a in Fig. 2, isentered in the machine between the paper apron 35 and the platen, andwhen the platen is given rotary movement by suitable line spacing orrotating devices, aid paper is fed between the platen and the feedrollers 31, passing around. toward the front of the machine between theplaten and the scale plate 37 and thence between the platen and suitablepaper fingers 63 which are secured at the front of the platen frame inany desired manner. The bottom port-ion of the sheet of paper may dropback rearwardly into contact with the paper table 44. Said paper table,it will be observed, is hinged to the sleeve 21 so that it may be swungforwardly about said sleeve to expose the carriage truck and the devicesat the rear of the machine.

When it may be desired to free the paper from the control of the novelpaper feeding and controlling devices above described, the finger piece54 may be depressed until the stop 55 contacts with the top of the sidebar 12. The depression of the finger piece or key 54 operates throughthe feed roller release lever 49 to rotate the sleeve 21 on the hollowback rod 11 and to extend the helical draw spring 58. As the sleeve isrotated it swings the hanger arms 22 rearwardly away from the platen,said hanger arms carrying with them the feed rollers 31 and therebyfreeing the paper from the control of the latter, so that said paper maybe freely adjusted or withdrawn. When pressure is withdrawn from therelease key 54 the draw spring 58 contracts and restores the parts tonormal position, causing the paper feed rolls to again cooperate withthe platen to control the paper. In practice I prefer to provide twodraw springs like 58, one at each side of the machine, although, ofcourse, the influence of one of said springs is exerted on the sleeve 21throughout the length of the latter and by said sleeve will betransferred to all the hanger arms secured thereto.

Various changes may be made without departing from the spirit of myinvention.

What I. claim as new and desire to secure by Letters Patent, is

1. In a typewriting machine, the combination of platen, a platen carriercomprising a longitudinally extending bar, a sleeve mounted on said bar.slotted hanger arms on said sleeve, means for affording variation in thenormal relationship between said hanger arms and said sleeve, a shaftsuperases ported. in slots in said hanger arms, a feed apron secured onsaid hanger arms and proroll on said shaft, springs on said hanger armsengaging said shaft, and means tending constantly to turn said sleeve.

In a typewriting machine, the combination of platen, a platen carriercomprising a bar extending longitudinally thereof, a sleeve on said bar,slotted hanger arms on said sleeve, said hanger arms being adjustableboth longitudinally of and circumferentially of said sleeve, a shaftsupported in the slots of said hanger arms, a feed roller on said shaft,springs cooperative with said shaft and with said hanger arms, and adraw spring connected with said sleeve and with the platen carrier andtent zling constantly to turn said sleeve and urge said hanger armstoward the platen.

In a typewriting machine, the combination of a platen, a platen carriercon'iprising a bar extending longitudinally of the platen, a sleeverotatable on said bar, hanger arms fixed on said sleeve and dependingtherefrom, said hanger arms being provided with slots at their lowerends, a shaft bearing in said slots and carrying a paper feed roller,springs on said hangers cooperative with said shaft to maintain it inits bearings and press it toward. the platen, and draw spring having oneend connected with said sleeve and the other end secured at the oppositeside of said platen carrier.

l, In a typewriting machine, the combination of a platen, a platencarrier comprising a bar extending longitudinally of the platen, asleeve rotatable on said bar, hanger arms fixed on said sleeve anddepending therefrom, said hanger arms being provided with slots at theirlower ends, a shaft bearing in said slots and *arrying a paper feedroller, springs on said hangers coiiperative with said shaft to maintainit in its bearings and press it toward the platen, draw spring havingone end connected with said sleeve and the other end secured attheopposite side of said platen carrier, and a tubular housing for saiddraw spring fixed to the platen frame.

In a typewriting machine, the combination of a platen, a platen carriercomprising a longitudinal bar, a sleeve on said bar, hanger armsadjustable on said sleeve, a feed roller supported by said hanger arms,a paper apron supported on said hanger arms and provided with an openingfor said feed roller, and means tending constantly to turn said sleeveand urge said feed roller and paper apron toward. the platen.

6. In a typewriting machine, the combination of a platen, a platencarrier comprising a bar extending longitudinally of the platen, asleeve rotatable on said bar, hanger arms fixed on said sleeve anddepending l1erofrom, a paper feed roller supported at the lower ends ofsaid hanger arms, a paper vided with an opening tlnrough which saidpaper feed roller protrudes to cooperate with said platen, and a papertable connected with said sleeve.

7. In a typewriting machine, the combination of platen, a platen carriercomprising a bar, a sleeve mounted on said bar, hanger arms supported onsaid sleeve and adjustable both lengthwise and circumferentiallythereof, a feed roller supported by said. hanger arms, a paper apronsupported by said hanger arms, a platen scale secured to said bar andindependent of said hanger arms, and means for turning said sleeve andpressing said feed roller and paper apron toward the platen.

8. .ln a typewriting machine, the combination of a platen, a platencarrier comprising a bar evtending longitudinally of the platen, asleeve rotatable on paid bar, hanger arms fixed on said sleeve, a paperfeed roller supported on said hanger arms, a paper apron tired to saidhanger arms and provided with an opening through which. said feed rollerprotrudes to cooperate with said platen, a platen scale provided witharms secured to said longitudinal bar, said scale arms cooperating withsaid bar through openings in said sleeve, and paper table provided withspring clips bearing on said sleeve.

9. in a typewriting machine, the combination of a platen, a platencarrier comprising a bar extending loi'igitndinally of the platen, asleeve rotatable on said bar, split hanger arms adjustable on saidsleeve, screws cooperating with said hanger arms to maintain them fixedrelatively to said sleeve, said hanger arms being provided with slots attheir lower ends, a shaft bearing in said slots and carrying a paperfeed roller, and springs secured to said hanger arms and cooperatingwith said shaft to maintain it in the slots in said hanger arms andpress it toward the platen.

10. in a typewriting machine, the combination of a platen, a platencarrier comprising a bar extending longitiulinally of the platen, asleeve rotatable on said bar, split hanger arms a djust ble on saidsleeve, screws cooperating with said hanger arms to maintain them fixedrelatively to said sleeve, said hanger arms being provided with slots attheir lower ends, a shaft bearing in said slots and carrying a paperfeed roller, springs secured to said hanger arms and goopera sing withsaid shaft to maintain i in the slots in said hanger arms and press ittoward the platen, and al elical draw spring having one end operativelyconnected with said sleeve and the other end secured at the oppositeside of said platen carrier.

11. In a ty niwriting machine, the combination of a platen, a platencarrier comprismg a bar extending longitudinally of the platen, a sleeverotatable on said bar, hanger arms fixed on said sleeve, a paper feedroller supported on said hanger arms, a lever secured to said sleeve,and a draw spring having one end secured to one arm of said lever andthe other end secured at the opposite side of the platen carrier, theother arm of said lever being provided with a finger piece for operatingit to release said paper feed roller.

1 In a typewriting machine, the combination of a platen, a platencarrier compris ing a bar extending longitudinally of the platen, asleeve rotatable 011 said bar, sets of hanger arms secured to saidsleeve, the lower ends of said hanger arms being provided with slots,feed roll shafts, each shaft cooperative at its ends with one of saidsets of hanger arms, a pair of feed rollers rotatably mounted on each ofsaid shafts, and a sleeve on each of said shafts between said feedrollers and serving to maintain the latter spaced apart.

13. In a typewriting machine, the combination of a platen, a platencarrier comprising a bar extending longitudinally of the platen, asleeve rotatable on said bar, sets of hanger arms secured to saidsleeve, the lower ends of said hanger arms being provided with slots,feed roll shafts, each shaft cooperative at its ends with one of saidsets of hanger arms, a pair of feed rollers rotatably mounted on each ofsaid shafts, a sleeve on each of said shafts between said feed rollersand serving to maintain the lat ter spaced apart, and a draw springextending transversely of the platen and having one end connected withsaid sleeve and the other end secured to said platen carrier.

lat. In a typewriting machine, the combination of a platen, a platencarrier comprising a bar extending longitudinally of the platen, asleeve rotatable on said bar, sets of hanger arms secured to saidsleeve, the lower ends of said hanger arms being provided with slots,feed roll shafts, each shaft cooperative at its ends with one of saidsets of hanger arms, a pair of feed rollers rotatably mounted on each ofsaid shafts, a sleeve on each of said shafts between said feed rollersand serving to maintain the latter spaced apart, a draw spring extendingtransversely of the platen and having one end connected with said sleeveand the other end secured to said platen carrier, and a tubular housingfor said draw spring.

15. In a typewriting machine, the combination of a platen, aplatencarrier comprising a bar extending longitudinally of the platen, asleeverotatable on said bar, a plurality of split hanger arms adjustablysecured on said sleeve and arranged in pairs, the lower ends of saidhanger arms being slotted, a shaft bearing at its ends in the slots ineach of said pairs of hanger arms, a

plurality of paper feed rollers mounted on each of said shafts, aspacing sleeve on each shaft between said feed rollers, fiat springssecured to said hanger arms and cooperating with the ends of said shaftsto maintain said shafts in their bearings and press them toward theplaten, a lever provided with a split collar secured on said sleeve atone end, and a draw spring having one end secured to one arm of saidlever and the other end secured at the opposite sideof the platencarrier, the other arm of said lever being provided with a finger pieceoperative to release said paper feed rollers.

16. In a typewriting machine, the combination of a platen, a platencarrier, a carriage truck on which said carrier is rotatable andshiftable, and a paper table pivotally connected with said carrier andnor mally resting on said carriage truck, said paper table beingconstructed to remain in normal feeding position when said carrier iseither shifted or is rotated to expose the line of writing and beingadapted normally to be swung toward the platen and away from the track.

17. In a typewriting machine, the combination of a platen, a platen car*iage, a paper table, spring clips normally pivotally connecting saidpaper table with said carriage, and means independent of said springclips for supporting said paper table and maintaining it in normalrelationship with said carriage.

18. In a typewriting machine, the combination of a platen, a sleeve thatextends substantially throughout the length of the platen, hangers whichare secured to said sleeve to rotate therewith, feed rollers carried bysaid hangers, and a finger piece secured to said sleeve for turning itand thereby forcing the feed rollers out of contact with the platen.

19. In a typewriting machine, the combination of a platen, a platenframe, a rod carired by or formed as a part of the platen frame, asleeve which extends substantially throughout the length of the platenand which is supported to turn on said rod, hangers adjustably securedto said sleeve, feed rollers carried by said hangers, a finger piececonnected to said sleeve, and a spring for turning the sleeve and theparts con nected thereto in one direction.

20. In a typewriting machine, the combination of a platen, a platenframe, a rod carried by or formed as a part of said platen frame, asleeve connected to turn on said rod, hangers carried by said sleeve,feed rollers carried by said hangers, a spring carried by each of saidhangers and adapted to force the feed rollers toward the platen, aspring which tends to turn the sleeve and force the feed rollers towardthe platen through said first mentioned springs, and

throughout the length of the platen and 1 which is mounted in the platenframe, hangers carried by said pivotal support and adjustable around thesupport and longitudinally thereof, and feed rollers supported by saidhangers.

Signed at the borough of Manhattan, city of New York, in the county ofNew York, and State of New York, this 30th day of January, A. D. 1905.

OSCAR lVUOlfiVARD. lVitnesses E. M. lVnLLs, M. F. HANNWEBER.

